Pump



Marni 27, 1923..

B. U. POTTER ET AL.

PUMP.

FILED MAY 1a, 1922.

I awwwwcoz s w Q 12," QUICK/"40135 Patented Mar. 27, 1923..

STATES PATENT OFFICE.

BERNARD U. POTTER AND WILLS M. FLEMING, 01F HOLYOKE, MASSACHUSETTS, ASSIGNORS TO WOBTHINGTON PUMP AND MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA.

PUMP.

Application filed May 1 8, 1922. Serial Ho.561,836.

To all whom it may concern:

Be it known that we, BERNARD U. Porr- TER and WILLs M. FLEMING, citizens of the United States, residing at Hol oke, county of Hampden, and State of assachusetts, have invented certain new and useful llmprovements in Pumps, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to improvements in pumps.

It is the especial object of the present invention to provide an improved means for priming pumps, in which a quantity of reserve hquid for the priming operation is held in a reservoir arranged to be filled by liquid from the pump suction air chamber or the suction line delivering to such chamber, and there is provided a valved connection from such reservoir to the pump chamber, whereby such reservoir will be kept filled and its contents be at all times available for delivery directly to the pump chamber lndependently of the suction valves when pr min is necessary.

%n the accompanying drawings forming a part of this specification, a horizontal singleacting pump embodying the invention in a preferred form is shown, and this construction will now be described in detail in connection with said drawings and the novel features of the invention then be pointed out in the claims.

In the drawings- Figure 1 is a side elevation, partly in section, showing a single-acting horizontal plunger pump with the priming reservoir connection to the plunger chamber thereof;

Figure 2 is a view looking to the left of Fig. 1 and showing the suction air chamber in section, and

Figure 3 is a section on the line 3--3 of eferring now to the drawings, A indicates generally the pump cylinder casting, the pump plunger, C, D suction and discharge valves, E the discharge air chamber, F the plunger or pulsation chamber formed b an enlargement of the cylinder space, and the suction air chamber. The plunger B is re-- ciprocated from the crank shaft through the usual intermediate eccentric and crosshead connections, such, for example, as shown in United States Letters Patent No. 1406178, ranted February 14, 1922, to Fleming and righam. While the suction air chamber G may be of any suitable'form, it has been shown as approximately circular in cross section (Fig. 3) and may be advantageously located, as shown, contiguous to the plunger chamber F. In the arrangement shown, also liquld from the pump suction line enters chamber G at 11 and passes therefrom at 10 to the pump.

In order to assure at all times after the initial operation of the pump, a suflicient quantity of priming liquid .which will be available for delivery to the plunger chamber on starting, there is provided, preferably within the suction air chamber G, a priming reservoir 1, which may conveniently be formed integrally with the wall of such chamber, the bottom of such reservoir being above or level with the bottom of the plunger chamber F to facilitate flow of a suflicient quantity of priming liquid from such reservoir to the pump plunger chamber by avity. The reservoir 1 is also so positioned within the suction air chamber as to be beneath, and therefore directly supplied. with liquid from, the suction line inlet 11, whereby the' reservoir will always be maintained full of liquid for priming purposes after the pump has once been run. The interior of the reservoir 1 is connected with the plunger chamber F by a pipe 2, in which is inter posed a. valve 3 of ordinary construction, provided with a hand-wheel 4: for closing or partially closing the same after the pump has been primed and for opening the valve in starting up. If almost closed, so that only a small quantity of water is admitted to the pump at each stroke, the priming is well maintained under long suction lifts or with long suction pipes.

It will be noted that the chamber G is of sufficient height to accommodate the reservoir 1 therein and still have sufiicient space thereabove to perform its function as a suction air chamber. The pump, when first operated, may be conveniently primed by filling the reservoir 1 through an orifice 5 in the top of the suction air chamber G, such orifice being thereafter closed by a screw plug 6.

The present priming means will be found of especial advantage in those locations where moderate to high suction lifts are ention 10, the pump thus being always ready to be started up quickly, should the air inlet (indicated at 7) for any reason break the vacuum in thesuction line, the liquid always in reserve in the reservoir 1 being always available for priming. The valve 3 may be closed after priming, and thus assure a sufficient quantity of riming liquid remaining in the reservoir or future starting. It

will be obvious that where the priming means herein shown and described is to be used with a double-acting pump, it will be necessary merely to connect each end of the pump cylinder with the reservoir 1, or with separate reservoirs filled from a single or separate priming chambers, as desired.

It will be understood that the invention is not to be confined to use wit-h pumps of the particular type shown, but that various modifications and changes may be made in the construction and arrangement of parts shown to meet difierent requirements, While still retaining the invention definedvby the claims.

What is claimed is:

l. Priming means for pumps, comprising a reservoir having an inlet open to liquid from the pump suction, and means for delivering hquidfrom said reservoir to the pump chamber independently of the pump valves for priming.

2. Priming means for umps, comprising a chamber through whic liquid from the suction line passes to the suction valves, a reservoir having an inlet open to the liquid inlet to said chamber, and a connection from said reservoir to the pump chamberfor delivering liquid to the latter independently of the pump valves for priming.

3. Priming means for pumps, comprising a suction air chamber through which liquid from the suction line passes to the suction valves, a reservoir located within said chamher and having an inlet open to the liquid supply to said air chamber, a connection from said reservoir to the. pump chamber independent of the suction valves, and a valve for controlling said connection.

4. Priming means for pumps, comprising a suction air chamber arranged to receive liquid from the pump suction line, a priming reservoir within said chamber and having its inlet open to liquid entering said chamber, a connection from said reservoir to the pump chamber independent of the suction valves, a valve for controlling said connection, and an inlet for filling said reservoir with liquid independently "of the suction line.

In testimony whereof, we have hereunto set our hands.

BERNARD U. POTTER. WILLS M. FLEMING. 

